mineral

A mineral is a naturally occurring, inorganic solid that has a definite chemical composition and a crystalline structure.

Minerals are found all over the Earth, in rocks, soil, water, and even in our bodies. They are important for many different things, including:

• Building materials: Many minerals are used to make building materials, such as bricks, concrete, and tiles.
• Jewellery: Some minerals are used to make jewellery, such as diamonds, rubies, and emeralds.
• Electronics: Some minerals are used in electronics, such as silicon and quartz.
• Medicine: Some minerals are used in medicine, such as iron and calcium.

The diamond is a precious mineral.